Genome-wide association mapping in hairy vetch (Vicia villosa) discovers a large effect locus controlling seed dormancy.

ABSTRACT: Hairy vetch (Vicia villosa Roth), a winter-hardy annual legume, is a promising cover crop. To fully leverage its potential, seed production and field performance of V. villosa must be improved to facilitate producer adoption. Two classic domestication traits, seed dormancy (hard seed) and dehiscence (pod shatter), are selection targets in an ongoing breeding program. This study reports a genome-wide association study of 1,019 V. villosa individuals evaluated at two sites (Knox City, Texas and Corvallis, Oregon) for the proportion of dormant seed, visual pod dehiscence scores, and two dehiscence surrogate measures (force to dehiscence and pod spiraling score). Trait performance varied between sites, but reliability (related to heritability) across sites was strong (dorm

SUBMITTER: Tilhou N 

PROVIDER: S-EPMC10628312 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature